.center_align
{
	text-align:center;
}

body
{
	font-family:arial;
}

.menu_link
{ 

	font-weight:bold;
	padding: 5px;
		
}

h1
{
	text-align:center;
}

#instruction
{
	font-style:italic; 
}

#test-link
{
	display: none;
}